PDX Music - join
PDX Music
Low activity, 18 members

bit.listserv.blues-l - join
Blues Music List (Moderated)
Medium activity, 343 subscribers, Usenet

DCAB-L - join
DCAB-L supports the Washington DC/Baltimore area bluegrass community by providing a forum for its denizens. Disruptive, potentially illegal, or commercial non-bluegrass posts, are not tolerated and consitute grounds for expulsion, AT THE MODERATOR'S DISCRETION.
Low activity, 539 members, restricted